Transportation of MHD nanofluid free convection in a porous semi annulus using numerical approach

被引：63
作者：
Sheikholeslami, M. [1 ]
Ganji, D. D. [2 ]
机构：
[1] Babol Noshirvani Univ Technol, Dept Mech Engn, Babol Sar, Iran
[2] Islamic Azad Univ, Sari Branch, Dept Mech Engn, Sari, Iran
来源：
CHEMICAL PHYSICS LETTERS | 2017年 / 669卷
关键词：
Nanofluid; Porous media; Semi annulus; Magnetic field; Natural convection; KKL model; HEAT-TRANSFER; NATURAL-CONVECTION; RECTANGULAR ENCLOSURE; HYDROTHERMAL BEHAVIOR; THERMAL-RADIATION; MAGNETIC-FIELD; CAVITY; EXISTENCE; FLOW; NANOPARTICLES;
D O I：
10.1016/j.cplett.2016.12.045
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nanofluid free convection in presence of Lorentz forces in a permeable semi annulus is simulated using Control Volume based Finite Element Method. Impact of porous media on governing equations is considered by means of Darcy law. Brownian motion impact on properties of nanofluid is taken into account using Koo-Kleinstreuer-Li (KKL) model. Important parameters are inclination angle (xi), CuO-water volume fraction (phi), Hartmann (Ha) and Rayleigh (Ra) numbers for porous medium. A formula for Nu(ave) is provided. Results indicated that temperature gradient detracts with enhance of Ha but it enhances with rise of xi,Ra. Heat transfer augmentation enhances with rise of Lorentz forces. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：202 / 210
页数：9
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